Empty object != null in CustomPass

Hi!
If I have field with class from Scene like: GameObject, Reflection Probe, etc., and I want to ckeck it on Null, I always get that it is not null, but it is not true.

private GameObject _testObject = null;

protected override void Execute(CustomPassContext ctx)
{
    _testObject= null;
    Debug.Log(_testObject != null); //Always True
    Debug.Log(_testObject.name); //Always NullReferenceException
}

How can I solve this problem?
Thanks!

Edit: Unity 2022.1.10f1, HDRP 13.1.8

Reboot Unity = solution. But I know that this case happen not only with me.